Doppler ultrasonography has evolved into a cornerstone of ultrasound imaging. In this article, we delve into the fundamental principles of Doppler ultrasonography, introduce color and spectral Doppler analysis, and highlight common applications relevant to point-of-care (POCUS) practitioners. From enhancing the safety of bedside procedures to estimating cardiac output, to exploring findings of venous congestion, we review the key advantages, disadvantages, and challenges of using Doppler in POCUS.
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http://dx.doi.org/10.1016/j.mcna.2024.07.009 | DOI Listing |
Oncol Lett
March 2025
Department of Imaging, The Affiliated Hospital of Beihua University, Jilin, Jilin 132011, P.R. China.
Contrast-enhanced ultrasonography (CEUS), a newly developed imaging technique, holds certain value in differentiating benign from malignant tumors. Additionally, serum tumor markers also exhibit significant clinical importance in the diagnosis and monitoring of malignant tumors. Reports have indicated abnormal expression of HER-2, CA153 and sE-cad in breast cancer.
View Article and Find Full Text PDFVet Med Sci
January 2025
Department of Biochemistry, Faculty of Veterinary Medicine, Erzurum, Turkey.
Background: Isoproterenol (ISO) is a nonselective beta-adrenergic receptor agonist known for its vasodilatory effects. This experiment aims to investigate whether intrauterine ISO administration could alter vascular indices and follicular development in postpartum Holstein cows.
Objectives: The objectives are to evaluate the effects of intrauterine ISO administration on vascular changes and its impact on follicular development compared to placebo groups.
Ultrasound J
January 2025
Faculdade de Medicina da Universidade de Lisboa, Lisbon, Portugal.
Background: There are significant discrepancies in the optic nerve sheath diameter (ONSD) reported in the literature. We aimed to determine the ultrasonographic imaging features of ONSD and ophthalmic vessels in a healthy population, using a standardized protocol, and to estimate the effect of demographics and positioning changes on imaging measurements.
Methods: We measured the mean values of the ONSD in supine and sitting position and the Doppler imaging parameters of the ophthalmic, central retinal and short posterior ciliary arteries.
J Clin Ultrasound
January 2025
Argentinian Critical Care Ultrasonography Association (ASARUC), Buenos Aires, Argentina.
Fibromuscular dysplasia (FMD) is a rare, non-atherosclerotic vascular disease affecting medium to large arteries, especially the renal and internal carotid arteries (ICAs). The string-of-beads appearance, indicative of alternating areas of stenosis and dilatation, is a key imaging feature typically observed in the distal ICAs. Diagnosing FMD in critically ill patients poses challenges due to the risks associated with traditional imaging methods such as computed tomography angiography (CTA), magnetic resonance angiography, and digital subtraction angiography.
View Article and Find Full Text PDFPLoS One
January 2025
Department of Radiology, The First People's Hospital of Xiaoshan District, Xiaoshan Affiliated Hospital of Wenzhou Medical University, Hangzhou, Zhejiang, China.
Background: Previous studies have shown that higher uterine artery pulsatility index (UtA-PI) values in early pregnancy have predictive value for the risk of preeclampsia (PE). However, the sensitivity and specificity of this marker remain controversial. This study aims to explore further the association between UtA-PI in early pregnancy and the incidence of preeclampsia.
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